Optimum Nutrition – Serious Mass 2.73 Kg

Optimum Nutrition Serious Mass 2.73Kg

The ULTIMATE weight gain formula.
Add serious mass with 1,250 quality calories per shake.
Support muscle growth with 50 g of proteins and 250 g of carbs per serving.
Enjoy between meals, post-workout &/or before bed.

ON’s Serious Mass is the ULTIMATE weight gain formula. If you find it difficult to gain weight, Serious Mass will help you develop the physique you’ve always wanted!

What Does Serious Mass Do?
Each delicious shake delivers an incredible 1,250 calories, but no added sugar. This includes 50 g of blended protein to support muscle growth and 250 g of carbohydrates.

When Is The Best Time To Enjoy My Shake?
Simply mix up 2 scoops with milk or water in your ON shaker and enjoy between meals, post-workout and/or before bed.
No surprise that customers voted Serious Mass ‘Weight Gainer of the Year’ at the recent Bodybuilding.com Awards!
Suitable for vegetarians.

What’s In Optimum Nutrition Serious Mass?
Calories 1250
Calories from Fat 40
Total Fat 4.5 g 7%
Saturated Fat 3 g 15%
Cholesterol 75 mg 25%
Total Carbohydrate 252 g 84%
Sugars 40 g
Protein 50 g 100%
Vitamin C 60 mg 100%
Vitamin D 200 I.U. 50%
Vitamin E 30 I.U. 100%
Thiamin 5 mg 330%
Riboflavin 5 mg 290%
Niacin 50 mg 250%
Vitamin B6 5 mg 250%
Folic Acid 400 mcg 100%
Vitamin B12 20 mcg 330%
Biotin 300 mcg 100%
Pantothenic Acid 100 mg 1000%
Calcium 730 mg 70%
Iron 6 mg 35%
Phosphorus 350 mg 35%
Iodine 75 mcg 50%
Magnesium 186 mg 45%
Zinc 30 mg 200%
Selenium 200 mcg 290%
Copper 1 mg 50%
Manganese 10 mg 500%
Chromium 600 mcg 500%
Molybdenum 150 mcg 200%
Sodium 600 mg 25%
Potassium 1230 mg 35%
Choline 250 mg
Inositol 250 mg
PABA 5 mg
Creatine Monohydrate 1 g
L-Glutamine 500 mg

Ingredients for Optimum Nutrition Serious Mass:
Complex Carbohydrates, Proprietary Protein Blend (Whey Protein Concentrate, Calcium Caseinate, Egg Albumen, L-Glutamine), Artificial Flavor, Serious Mass Vitamin & Mineral Blend (Potassium Phosphate, Choline Bitartrate, Magnesium Aspartate, Beta Carotene, Inositol, d-Calcium Pantothenate, Zinc
Citrate, Ascorbic Acid, Boron Amino Acid Chelate, Niacinamide, Manganese Glycinate, Kelp, d-alpha Tocopherol Succinate, Ferrous Fumarate, Copper Gluconate, Thiamin Mononitrate, Riboflavin, Pyridoxine Hydrochloride, Para-Aminobenzoic Acid, Chromium Picolinate, Selenium Glycinate, Molybdenum Glycinate, Vitamin D3, Folic Acid, Biotin, Cyanocobalamin), Medium Chain Triglycerides, Creatine Monohydrate, Acesulfame Potassium. (Vanilla shown. Slight variations may occur among flavors.)

Directions for Optimum Nutrition Serious Mass:
Take 2 servings of Serious Mass per day

Disclaimer: The nutrition facts and weight listed above are a guideline only and are supplied as a courtesy to our customers. The nutrition facts are based on one particular flavour and were current and accurate to the best of our knowledge at the time they were entered. Some flavours may be different in terms of nutritional information, servings per container and weight. Please note that manufacturers often change formulas or ingredients without notifying us.


Product Description: Optimum Nutrition Serious Mass 2.73Kg

Are you on a quest for substantial weight gain and muscle development? Look no further than Optimum Nutrition’s Serious Mass, the ultimate weight gain formula. Designed to help you achieve the physique you’ve always desired, Serious Mass is a powerful supplement packed with exceptional nutritional value.

Serious Mass Nutritional Powerhouse:

  • 1,250 Quality Calories: Each delicious shake delivers a remarkable 1,250 calories, giving you the energy and fuel you need to reach your weight and muscle goals. What’s even better? No added sugar!
  • 50g of Protein: Serious Mass includes a blend of 50g of high-quality proteins, including Whey Protein Concentrate, Calcium Caseinate, and Egg Albumen. This protein infusion supports muscle growth and recovery, helping you build the lean, sculpted physique you desire.
  • 250g of Carbohydrates: With 250g of carbohydrates per serving, Serious Mass replenishes glycogen stores, providing the essential energy required for intense workouts and muscle development.
  • Essential Vitamins and Minerals: Serious Mass boasts a comprehensive vitamin and mineral blend, ensuring you receive essential nutrients vital for overall health, including Vitamins C, D, and E, B vitamins, and essential minerals such as Calcium, Iron, and Zinc.
  • Creatine Monohydrate and L-Glutamine: This supplement also includes Creatine Monohydrate and L-Glutamine, known for their roles in enhancing strength, endurance, and recovery.
  • Suitable for Vegetarians: Serious Mass is suitable for vegetarians, making it an inclusive choice for a wide range of dietary preferences.

How to Enjoy Your Shake:

Mix 2 scoops of Serious Mass with milk or water using your ON shaker. You can enjoy this power-packed shake between meals, post-workout, and even before bedtime, ensuring a continuous supply of nutrients and amino acids for muscle growth and recovery.

Award-Winning Formula:

Serious Mass has earned the coveted title of ‘Weight Gainer of the Year’ at the Bodybuilding.com Awards, reflecting its exceptional quality and effectiveness in helping individuals achieve their fitness goals.


Serious Mass is crafted with precision, combining complex carbohydrates, a proprietary protein blend, vitamins, minerals, and other essential components to fuel your journey to a stronger, healthier you. Please note that ingredient variations may exist among different flavors of this product.

Directions for Use:

To maximize the benefits of Serious Mass, consume two servings per day as part of your dietary and fitness regimen. Whether you’re striving for substantial weight gain or aiming to boost your muscle growth, Serious Mass is your trusted partner on this exciting journey to a more powerful and healthier you.

Please be aware that while we strive to provide accurate and up-to-date nutritional information, manufacturers may occasionally modify formulas or ingredients without notice. Rest assured, we’re committed to delivering the most reliable and effective nutritional supplements to support your fitness aspirations.

Optimum Nutrition’s Serious Mass is your gateway to a stronger, healthier, and more confident you. Don’t wait; start your journey today and experience the transformative power of Serious Mass in reaching your fitness goals.

Additional information

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Vanilla, Banana, Cookies and Cream, Strawberry, Chocolate, Chocolate Peanut Butter

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